Ride Comfort Analysis of a Vehicle Based on Continuous Wavelet Transform

  • Lee, Sang-Kwon (Department of Mechanical Engineering, Inha University) ;
  • Son, Choong-Yul (Department of Architecture and Ocean Engineering, Inha University)
  • Published : 2001.05.01

Abstract

This paper presents the ride comfort analysis of a vehicle based on wavelet transform. Traditionally, the objective evaluation of impact harshness is based on the vibration dose value (VDV) and frequency weighting method. These methods do not consider the damping effect of the suspension system of a vehicle. In this paper, the damping is estimated using wavelet transform based on Morlet mother wavelet and its effect is considered for the subjective evaluation of impact harshness of a car.

Keywords

References

  1. Cohen, L., 1995, Time-Frequency Analysis, pp.46-49, Prentice Hall
  2. Daubechies, I., 1992, Ten Lectures on Wavelets, Society for Industrial and Applied Mathematics.
  3. Griffin, M. J., 1990, Handbook of Human Vibration, Academic Press
  4. Hlawatsch. F. and Boudreaux, G. F., 1991, 'Linear and Quadratic Time-Frequency Signal Representations,' IEEE SP Magazine, April, pp.21-67 https://doi.org/10.1109/79.127284
  5. Kronland. R. and Morlet, J., 1987, 'Analysis of Sound Through Wavelet Transforms.' International Journal of pattern Recognition and Artificial Intelligence, Vol. 1, pp. 273-302 https://doi.org/10.1142/S0218001487000205
  6. Koenig, R.,1946, 'The Sound Spectrogram,' J. Acoust. Soc. Am., Vol. 18, pp. 19-46 https://doi.org/10.1121/1.1916342
  7. Lee, S.K. and White, P. R., 1997, 'Fault Diagnosis of Rotating Machinery Using Wigner Higher Order Moment Spectra,' Mechanical Systems and Signal Processing, Vol. 11, pp. 637-650 https://doi.org/10.1006/mssp.1997.0098
  8. Lee, S. K. and White, P. R., 1998a, 'The Enhancement of Impulsive Noise and Vibration Signals for Fault Detection in Rotating and Reciprocating Machinery,' Journal of Sound and Vibration, Vol. 217, No.3, pp. 484-505 https://doi.org/10.1006/jsvi.1998.1767
  9. Lee, S. K. and White, P. R., 1999, 'Two-Stage Adaptive Line Enhancer and Sliced Wigner Trispectrum for the Characterization of Faults from Gear Box Vibration Data,' Transaction of the ASME, Journal of Vibration and Acoustics, Vol. 121, pp. 488-494
  10. Lee, S. K., 1998b, 'Adaptive Signal Processing and Higher Order Time Frequency Analysis and Their Application to Condition Monitoring,' Ph. D. thesis, ISVR, The University of Southampton, U.K.
  11. Lee, S. K., 1999, 'Application of the L-Wigner Distribution to the Diagnosis of Local Defects of Gear tooth,' KSME International Journal, Vol. 13, No.2, pp. 144-157
  12. Lee, S.K., Choi, B.U. and Yeo, S.D., 1993, 'Identification of Relation Between Crankshaft Bending and Interior Noise of A/T Vehicle in Idle Stage,' The SAE International Congress and Exposition, Detroit, Michigan, SAE paper No. 930618
  13. Newland, D.E., 1994, An Introduction to Random Vibration, Spectral and Wavelet Analysis, 3rd Edition, Longman Scientific & Technical
  14. Norsworth, T. H., 1985, 'The Correlation of Objective Ride Measures to Subjective Jury Evaluation of Class of COE Vehicle,' The SAE International Congress and Exposition, Detroit, Michigan, SAE paper No. 850985
  15. Papoulis, A., 1991, Probability, Random Variables and Stochastic Processes. 3rd Edition, McGRAW-Hill International Edition
  16. Takata, N., Ikura, S. and Shimada, T., 1986, 'An Analysis of Ride Harshness,' International Journal of Vehicle Design, Special issue on Vehicle Safety, pp. 291-303
  17. Varterasian, J.H., 1982, 'On Measuring Automobile Seal Ride Comfort.' The SAE International Congress and Exposition, Detroit, Michigan, SAE paper No. 820309
  18. Walpole, R.E. and Myers, R.H., 1993, Probability and Statistics for Engineers and Scientists, 3rd Edition, Macmillan Publishing Company
  19. Wigner, E. 1932, 'On the Quantum Correlation for Thermodynamic Equilibrium,' Phys. Rev., Vol. 40, pp. 747-759